Do dolphins sleep in the day or the night?

Answer 1

Yes. All creatures must sleep. The dolphin can sleep, move and breath at the same time.

They do this by allowing only half of their brain to shut down. They often can get about 8 hours of sleep. They can accomplish this three ways. They can slowly cruise at the surface of the water taking breaths, they can rest at the bottom of a shallow area rising to the surface to get a breath or they can simply rest on the surface. Dolphins do sleep, but in a very unique way. One half of the brain dozes off, whilest the other is still awake (looking out for predators) then vice versa (happens to the the other side) Hope it helps =)

Answer 2

Yes, but dolphins have to be conscious to breath. This means that they cannot go into a full deep sleep, because then they would suffocate. Dolphins have "solved" that by letting one half of their brain sleep at a time. This has been determined by doing EEG studies on dolphins. Dolphins sleep about 8 hours a day.

Answer 3

Generally, dolphins sleep with only one brain hemisphere in slow waves at a time, thus maintaining enough consciousness to breathe and to watch for possible predators and other threats. Earlier sleep stages can occur simultaneously in both hemispheres. In captivity, dolphins seemingly enter a fully asleep state where both eyes are closed and there is no response to mild external stimuli. In this case, respiration is automatic; a tail kick reflex keeps the blowhole above the water if necessary. Anesthetized dolphins initially show a tail kick reflex. Though a similar state has been observed with wild sperm whales it is not known if dolphins in the wild reach this state. The Indus river dolphin has a sleep method that is different from that of other dolphin species. Living in water with strong currents and potentially dangerous floating debris, it must swim continuously to avoid injury. As a result, this species sleeps in very short bursts which last between 4 and 60 seconds.

Answer 4

dolphins are day animals .at night they sleep with one eye open to watch for prey and predators.